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Description
SeeMee 400 Smart Motion Sensor - OptiTracing - ANT+Looking for an upgrade in visibility and control? SEEMEE 400 takes everything great about the SEEMEE 300and turns it up a notch. With higher output, expanded visibility, smarter syncing, and deeper integration, its built for road cyclists and urban riders who expect more from their taillight. 360 Visibility, Trusted by Pros Both SEEMEE 300 and SEEMEE 400 feature Magicshines signature OptiTracing light, projecting a 360 glowing halo onto the road for
Looking for an upgrade in visibility and control? SEEMEE 400 takes everything great about the SEEMEE 300—and
turns it up a notch. With higher output, expanded visibility, smarter syncing, and deeper integration, it’s built for road
cyclists and urban riders who expect more from their taillight.
turns it up a notch. With higher output, expanded visibility, smarter syncing, and deeper integration, it’s built for road
cyclists and urban riders who expect more from their taillight.
360° Visibility, Trusted by Pros
Both SEEMEE 300 and SEEMEE 400 feature Magicshine’s signature OptiTracing light, projecting a 360° glowing halo
onto the road for all-around visibility—a favorite among pro cyclists for its unmistakable presence in low light
condition. The Optillumin lens remains the same across both models, offering powerful rear and side illumination
through a compact, clean design.
Instant Boosting Alert
Both SEEMEE 300 and 400 feature brake detection—but SEEMEE 400 pushes it further with an instant 400-lumen
burst triggered by an upgraded motion sensor. It reacts faster and brighter, giving traffic behind more time to
respond and enhancing safety at every brake.
Next-Level Connectivity and Control
As Magicshine’s flagship taillight, SEEMEE 400 brings unmatched integration and coordination to your ride.
PelotonSync Flash lets multiple lights flash in unison—automatically syncing with nearby compatible Magicshine
taillights. Your group appears as a unified presence, boosting visibility and cohesion on the road.
FTR LightSync Control links seamlessly to the MJ-6558 remote for front-rear control at the push of a button. Prefer
cockpit integration? The SEEMEE 400 connects directly with Garmin, Wahoo, and Hammerhead bike computers via
ANT+—giving you effortless control right from your handlebars.
Built for Every Ride
SEEMEE 400 delivers up to 107 hours of runtime, USB-C fast charging, and a lockout function to prevent accidental
activation. Its IPX6 waterproof rating ensures all-weather reliability, while the quarter-turn mount offers quick, secure
installation on seatposts or saddle rails.
SEEMEE 400 is not just a brighter version of SEEMEE 300—it’s a smarter, safer, and more connected evolution. For
riders who go farther and ride smarter, it’s the taillight that keeps pace.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 3
Silicone socks
Size: M (up to size 9)-Beige
The socks are sized large. The quality of the silicone is good. But they slide around on your feet if you try to walk, making them difficult to use and a bit uncomfortable. Unless you are able to sit for long periods of time the likely will not work well. Recommend looking for a better value.
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Reviewed in the United States on October 27, 2024
★★★★★ 5
Effective
Size: L (up to size 11)-Pink
Fantastic. I put lotion on my feet & wear them when I go to sleep. I often wake up during the night and will remove them to find my feet soft and smooth. They are strong and fit my size 10 womens’ size.
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Reviewed in the United States on March 27, 2026
★★★★★ 1
The shoe size should be smaller 9 is the max and it is still to tight
Size: M (up to size 9)-Beige, Size: M (up to size 9)-Beige
Very tight had to take off my feet in the middle of the night they were cutting off my circulation.
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Reviewed in the United States on February 17, 2026
★★★★★ 5
Great product to keep moisture in
Size: M (up to size 9)-Beige
These are so cool. I was skeptical at first. After an at home pedicure I put lotion on and keep these on for about a few hours. The moisture retention, and comfort and fit or absolutely amazing!
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Reviewed in the United States on April 24, 2025
★★★★★ 5
These work!
Size: M (up to size 9)-Beige
I’ve had dry cracked feet my whole life. Tried these last night with lotion from Trader Joe’s and literally overnight my feet are the softest they’ve ever been. I put a pair of socks over them and went to sleep with them on. Hard to walk around with all that slippery-ness but worth it! 10/10✨👌
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Reviewed in the United States on June 11, 2025